Ventilatory System Quiz

What is vital capacity?

• Inspiratory reserve volume plus total lung capacity

• Total lung capacity minus residual volume

• Tidal volume plus inspiratory reserve volume

• Residual volume minus expiratory reserve volume

What is residual volume?

• Volume of air in the lungs after maximum inhalation

• Inflow and outflow of air between the atmosphere and the lungs

• Volume of air still contained in the lungs after maximal exhalation

• Additional inspired air over and above tidal volume

Which structure is responsible for moistening air entering the ventilatory system?

• Bronchi

• Larynx

• Pharynx

• Nose

Which statement describes the movement of the diaphragm during inhalation?

• The diaphragm moves downward to reduce pressure in the thoracic cavity.

• The diaphragm moves upward to reduce pressure in the thoracic cavity.

• The diaphragm moves downward to increase the pressure in the thoracic cavity.

• The diaphragm moves upward to increase the pressure in the thoracic cavity.

Which feedback mechanisms are associated with the chemical control of ventilation during exercise?

• Lung stretch receptors

• Muscle proprioreceptors

• Increases in blood acidity levels

• Increases in temperature

What is pulmonary ventilation?

• Exchange of respiratory gases between the lungs and blood

• Diffusion of oxygen in the alveoli

• Volume of air breathed in and out in one breath

• Inflow and outflow of air between the atmosphere and the lungs

Which are involved in neural control of ventilation?

• Sinoatrial and atrioventricular nodes

• Lung stretch receptors and chemoreceptors

• Adrenaline and breathing rate

• Diaphragm and accessory muscles

Where is hemoglobin located?

• In white blood cells

• In platelets

• In muscle cells

• In red blood cells

What factors may cause ventilation to increase during exercise?

• Decreased oxygen levels and decreased blood acidity

• Decreased carbon dioxide levels and increased blood acidity

• Increased carbon dioxide levels and increased blood acidity

• Increased oxygen levels and decreased blood acidity

What are the principal structures of the ventilatory system?

• Mouth, trachea, ribs, intercostal muscles

• Nose, pharynx, aorta, diaphragm

• Nose, trachea, bronchioles, alveoli

• Mouth, larynx, diaphragm, lungs